Transcript for 'GMA' Investigates: Are Used Car Dealers Selling Recalled Cars?
We are back now at 7:41 with our brand-new "Gma" investigates undercover and millions of gm cars have been recently recalled. So we wanted to know are vehicles with safety recalls still being sold before being fixed at used car lots? We took our undercover cameras to dealers and ABC's gio Benitez joins us now with shocking results. Good morning, gio. Reporter: Good morning, Lara. When you buy a used car you expect to be told everything about it, especially if there's a recall. But as our investigation found out, that's not always the case. This morning, "Gma" investigates. Dramatic photos capture the horrific accident that killed a nurse on her 29th birthday. Helping launch one of the biggest auto recalls in history. Lawyers say her cobalt had an ignition switch problem and she lost control just a few months after gm settled the case a recall fiasco. Now another potential danger. Car fax tells "Gma" more than 3 million used cars from different manufacturers are being sold right now with open recalls and if you don't check, you might never know. 23-year-old Damian snow says he bought this recalled 2004 P.T. Cruiser from a Los Angeles dealership. They told me everything is fine. It has no mechanical problems, it was checked out and nobody told me there was a recall on this car. Reporter: And there was a safety recall for that 2004 model. So "Gma" investigates hit the road to see what dealerships would tell us. Our producer went undercover in five New York area used car lots. Asking about cars we already knew had open recalls. Two of the seasmen do mention recalls. Has a recall on it right now. But the ignition switch. Reporter: But watch what happens at this dealership, a 2006 cobalt with that same ignition switch recall. Is it safe? I mean what about safety? Listen, it's a small car so being what it is, it's safe. Nothing I need to know about that car? No, all you have to do -- you saw my write-up. Yeah. I'm honest as you're going to be. Reporter: But what about that recall? "Good morning America," how are you. "Good morning America," how are you. Reporter: Good, good, good. "Gma" investigates went back to see Angelo. You said this car was safe but it actually has a recall. Well, recalls get recorded once you register the car. We don't know there's a recall. Reporter: Well, we pulled it up right here on gm.com, there's the recall for ignition switch replacement. We don't get these. Reporter: On gm.com we plugged in the V.I.N., the car's I.D. Number and within seconds we see it has a recall. There's no law that requires used car dealers to tell customers about open recalls, but shouldn't they do it anyway? So moving forward what do you think you'll do. Look at every vicious evacuate V.I.N. Number to sees if they a recall or not. You're promising on "Good morning America." He called us to tell he took that cobalt off the lot and was getting it fixed right away. To see if yours is on the list head over to "Gm goodmorningamerica.com on Yahoo! Great advice. Don't assume they'll do the homework. Great how you got them to make the promise. One down, how many to go? Exactly. And honestly we are looking forward to so many more reports from gio and the rest of the team, go get them. Thank you.
This transcript has been automatically generated and may not be 100% accurate.